Seyerle AA, Young AM, Jeff JM, Melton PE, Jorgensen NW, Lin Y, Carty CL, Deelman E, Heckbert SR, Hindorff LA, Jackson RD, Martin LW, Okin PM, Perez MV, Psaty BM, Soliman EZ, Whitsel EA, North KE, Laston S, Kooperberg C, Avery CL. Evidence of heterogeneity by race/ethnicity in genetic determinants of QT interval. Epidemiology. 2014 Nov; 25(6):790-8.